Hbineich bohle



UNITED STATES ATENT OFFICE.

HEINRICH 4EoHLE, on sPANDAU, PEUssIA, GERMAN EMPIRE.

I- Fl REV-Extl Ne u isi-l EH.

SPECIFCATION formingpart of Letters Patent No. 223,984, dated February 3, 1880.

Application filed December 17, 1879.

'To cllwho-m it may concern Be it known that I, HEINRICH BIILE, of the city of Spandau, in the Kingdom of Prussia, German Empire, have invented Improvements in Fire-Extinguishers, of which the following is a specification.

In the accompanying drawings, Figure l represents a vertical central section of the acid-bottle and its connection with the body of the extinguisher, on au enlarged scale; Fig. 2, a vertical central section of the extinguisher; and Fig. 3, a vertical central section of my improved connection between the body andbottom of the apparatus.

Similar letters of reference indicate corresponding parts.

This invention relates to improvements in fire-extinguishers of that class in which, by the breaking of an acid-bottle, the acid is allowed to escape and to evolve the carbonio acid gas by reaction with the ingredients dissolved in the water.

The invention consists of an acid-bottle-the walls of which are made thinner toward the bottom and provided with an annular contraction near the bottom, so as to be readily broken'by pressure on the top of the bottle.

The acid-bottle is\placed in a metallic casing or jacket, having at the lower part perforations for the gradual escape of the acid, it being-provided at the bottom part by a wire- A gauze lining, to retain small pieces of broken glass.

The invention consists, further, of a device for tightening the packing of the stufng-box ofthe pressure-screw after the bottle has been broken; and, inally, of a detachable bottom or top, which is screwed into the body of the apparatus and provided with a recessed lian ge or rim for facilitating the removal of the bottom or top for cleaning the apparatus.

Referring to the drawings, A represents the body of my improved' fire-extinguishing apparatus, at the upper part of which the acidbottle B is held suspended by a cylindrical casing or jacket, C, of suitable sheet metal. The acid-bottle' B is made of glass or other suitable material, the wall of which is of considerable thickness at the neck, and then made gradually thinner toward the bottom, being thinnest at the bottom part. The acid-bottle The inclosing-jacket C is screwed into the y closing top screw, C', of the apparatus. At the lower part the jacket is provided with perforations d, and lined at theinside with a wire-gauze covering, O2, which forms a kind of sprin g-cushion for 'the acid-bottle, and serves also to prevent the escape ot' smallpieoes of broken glass to the interior of the body.

The pressure-screw` D turns in an interior screw-thread of the top screw, C. The stuifin g-box c secures the tight connection between pressure-screw and top screw, While a handcrank, D, at the upper end of the pressurescrew D, serves for turning the pressure-screw. By turning the pressure-screw D downward the lower end of the same pressesv on the top of the acid-bottle and causes the breaking of the bottle by the crushing of the thinner bottom part of the same. The acid escapes then gradually through the holes of the jacket, mingles with the water in the body of the apparatus, which water is charged with bicarbonate of soda, and produces, by the reaction of the chemicals, the generation of carbonicacid gas, which takes place but slowly, owing to the gradual escape of the acid.

To prevent the accidental breaking of thel bottle or any tampering therewith, a collar,

is interposed between the inclosing screwnut of the stufng-box and a shoulder, f', of the crank-handle D', said collar being made of two hinged semi-sections, which are held together by means of' perforated ears, a connecting-wire and a lead seal, as shown in Fig. 1. The collarf is attached by a chain to the apparatus. When the collar is applied it serves to arrest the motion of the pressurescrew, and prevents the breaking of the acidbottle. When it is removed it admits the screwing down of the screw.

The shoulderf' of the crank-handle presses IOO ` 2 Massa `1o secured to the body, not by riveting, but by attaching them to the body A, in the manner shown in Fig. 3, by screwing them tightly overA the eXteriorly-threaded portion of the body.

The bottom E has an outwardly-flaring ange, E', on which the extinguisher rest-s,

the weight of the saine securing the tight connection of the bottom and body.

rlhe liange E is recessed at diametricallyopposite points, to insert a lhand-lever for 2o screwing on or unscrewing the bottom in a convenient manner.

rIhe apparatus may, by thc detachable bottom, be cleaned in a convenient manner, and then the apparatus quickly thrown into action by turning the Vpressure-screw after releasing' the sectional collar.

Having thus described my invention, I claim as new and desire to secure by'Letters Patentl. In tire-extinguishers, an acid-bottle which is made thicker at the upper part and thinner at the lower part, and provided with an ann nlar contraction near the bottoni, substantially as set forth.

2. In fire-extinguishers, the combination of an acid-bottle, made with thinner walls at the lower part, with an inclosingjacket having perforations at the lower part, and with a pressure-screw for breakin g the bottle by press- A ure on the top thereof7 substantially as speci- Ao lied.

3.4 In {ire-extinguishers, the combination of an acid-bottle, made with thinner walls at the lower part, with an inclosing-jacket having perforations, and with an intermediate guardscreen of wiregauze, substantially as described.

4. In lire-extinguishers, the combination of the stuffing-box ot the pressure-screw with the crank-handle of the pressure-screw, hav- 5o ing a shoulder which is adapted to compress the packing of the stutling-box on lowering the pressure-screw, substantially as set forth.

5. In tire-extinguishers, the combination of the body of the apparatus, having exterior screw-thread, with a threaded top or bottom, having a rim or flange with recesses at opposite points, for the purpose described.

In testimony whereot'I have signed my name to this specilication in the presence of two sub- 6o scribing witnesses.

HEINRICH BHLE.

Witnesses EDWARD P. MACLEAN, CARL FEHLER'I. 

